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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1NAM11FT028.mail.protection.outlook.com (10.13.175.214) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4930.15 via Frontend Transport; Thu, 27 Jan 2022 20:41:46 +0000 Received: from yaz-ethanolx.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.18; Thu, 27 Jan 2022 14:41:41 -0600 From: Yazen Ghannam To: CC: , , , , , , , Yazen Ghannam Subject: [PATCH v4 12/24] EDAC/amd64: Define function to get number of interleaved channels Date: Thu, 27 Jan 2022 20:41:03 +0000 Message-ID: <20220127204115.384161-13-yazen.ghannam@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220127204115.384161-1-yazen.ghannam@amd.com> References: <20220127204115.384161-1-yazen.ghannam@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 79944e87-69bc-4276-d024-08d9e1d56fb5 X-MS-TrafficTypeDiagnostic: BY5PR12MB4115:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:530; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Jan 2022 20:41:46.6074 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 79944e87-69bc-4276-d024-08d9e1d56fb5 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT028.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4115 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Move number of interleaved channel calculation to a separate helper function. Drop unused cases. Signed-off-by: Yazen Ghannam --- Link: https://lore.kernel.org/r/20211028175728.121452-18-yazen.ghannam@amd.com v3->v4: * No change. v2->v3: * Was patch 18 in v2. v1->v2: * Moved from arch/x86 to EDAC. drivers/edac/amd64_edac.c | 42 +++++++++++++++++++++------------------ 1 file changed, 23 insertions(+), 19 deletions(-) diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index b75311acbe13..87439374a076 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -1076,6 +1076,7 @@ struct addr_ctx { u8 inst_id; u8 map_num; u8 intlv_addr_bit; + u8 intlv_num_chan; u8 cs_id; int (*dehash_addr)(struct addr_ctx *ctx); }; @@ -1197,10 +1198,27 @@ static int get_intlv_addr_bit(struct addr_ctx *ctx) return 0; } +static void get_intlv_num_chan(struct addr_ctx *ctx) +{ + /* Save the log2(# of channels). */ + switch (ctx->intlv_mode) { + case NONE: + ctx->intlv_num_chan = 0; + break; + case NOHASH_2CH: + case DF2_HASH_2CH: + ctx->intlv_num_chan = 1; + break; + default: + /* Valid interleaving modes where checked earlier. */ + break; + } +} + static int denormalize_addr(struct addr_ctx *ctx) { u8 die_id_shift, die_id_mask, socket_id_shift, socket_id_mask; - u8 intlv_num_dies, intlv_num_chan, intlv_num_sockets; + u8 intlv_num_dies, intlv_num_sockets; u8 num_intlv_bits, cs_mask = 0; /* Return early if no interleaving. */ @@ -1213,23 +1231,9 @@ static int denormalize_addr(struct addr_ctx *ctx) intlv_num_sockets = (ctx->reg_limit_addr >> 8) & 0x1; intlv_num_dies = (ctx->reg_limit_addr >> 10) & 0x3; - /* Re-use intlv_num_chan by setting it equal to log2(#channels) */ - switch (intlv_num_chan) { - case 0: intlv_num_chan = 0; break; - case 1: intlv_num_chan = 1; break; - case 3: intlv_num_chan = 2; break; - case 5: intlv_num_chan = 3; break; - case 7: intlv_num_chan = 4; break; - - case 8: intlv_num_chan = 1; - break; - default: - pr_err("%s: Invalid number of interleaved channels %d.\n", - __func__, intlv_num_chan); - return -EINVAL; - } + get_intlv_num_chan(ctx); - num_intlv_bits = intlv_num_chan; + num_intlv_bits = ctx->intlv_num_chan; if (intlv_num_dies > 2) { pr_err("%s: Invalid number of interleaved nodes/dies %d.\n", @@ -1266,8 +1270,8 @@ static int denormalize_addr(struct addr_ctx *ctx) die_id_bit = 0; /* If interleaved over more than 1 channel: */ - if (intlv_num_chan) { - die_id_bit = intlv_num_chan; + if (ctx->intlv_num_chan) { + die_id_bit = ctx->intlv_num_chan; cs_mask = (1 << die_id_bit) - 1; ctx->cs_id = cs_fabric_id & cs_mask; } -- 2.25.1